Burglar-alarm



.(No Model.)

J. G. SIMS 8: P. R. SHORKES.

BURGLAR ALARM. No. 309,412. Patented Dec. 16 1884.

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JESSE C. SIMS AND FRANK R. SHORKES, OF MAYNARD, MASSACHUSETTS.

BURGLAR fllLARlvl.

SPECIFICATION forming part of Letters Patent No. 309,412, dated December 16, 1884.

Application filed May 21,1884.

To all whom it may concern:

Be it known that we, JESSE C. SIMS and FRANK It. SHoRKEs, both of Maynard, in the county of Middlesex and State of Massachusetts, have invented a new and Improved Bu rglar-Alarm, of which the following is a full, clear, and exact description.

The object of our invention is to provide a new and improved burglar-alarm which rings a bell and fires a cap or cartridge when the alarm is released, and which alarm can be conn'ected with any desired number of doors, windows,

The invention consists in a box containing a clock-work mechanism for operating ahammer and sounding-bells, and a vertically-movable hamn1er-rod pressed downward by a spring, and provided with means for holding the clock-work mechanism locked until a door or window is opened, whereby the hammer-rod is released and then forced downward by its spring,whereby the clock-work is released and a cartridge or cap placed below the hammerrod is fired and the bells rung.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a face view of our improved burglar-alarm, showing the manner in which it is connected with a window. Fig. 2 is an enlarged longitudinal sectional view of the box containing the alarm mechanism. Fig. 3 is a plan view of the same.

On the outside of a box, A, one or two bells, B, are held, and between them or at the side of one bell a hammer, O, is arranged to oscillate in the horizontal plane,which hammer is operated from a clock-work, D, or analogous mechanism or motor in the box A. Thehammer G is provided on its inner end with a latcrally projecting arm, E, having an eye or hook, 1 in its free end, which is adapted to re ceive ahook, G, projecting from a hammerrod, H, held to move vertically in guides J on the inner side of the box. The rod H is pressed downward by a spiral spring, K, surrounding it, and on the lower end of the rod H a head, L, is formed. On the upper surface of the bottom of the box a firing-block, M, is arranged below the lower end of the rod H.

(No model.)

side of the box A to permit placing cartridges or caps on the block. From the upper end of the rod H a pin, 0, projects, and the said upper end of the rod H passes through a slot, 1 or other opening larger than the cross-section of the rod in the top of the easing. An elbow or bell-crank lever, Q, is pivoted 011 the top of the box A, and to one end of it a wire or cord, R, is secured, by which and intermediate elbow-levers and wires the said elbow-lever-Q is connected with one end of a lever, S, pivoted to the inner surface of the wall at or near a window,'so that the outer end of the said lever S can be tripped by an arm, T, on the sash \V. A lever, S, can be arranged at each door, window, &c., and all the levers S are connected with the elbow-lever Q.

Suitable devices are provided on. the doors or windows for tripping the said levers S by raising the sashes or opening the doors.

The operation is-as follows: The rod H is pulled upward and held in position by resting the pin 0 on the top of the box A at one end of the slot P. A cap or cartridge is placed on the block M, and the arm E of the clock-work is engaged with the hook G 011 the rod H. If a door or window is opened, the lever S is At the block M a door, N, is formed in one tripped and the wires connected with the elbow-lever Q are pulled, whereby the said lever Q will swing in the direction of the arrow b and will push the rod 11 from the edge on which the pin 0 rests, whereby the rod H. is released and-is forced downward by the spring K upon the cap or cartridge,which is thus exploded. At the same time the clock-work is released and operates the hammer which sounds the bells.

Having thus described our invention, what we claim asnew, and desire to secure by Letters Patent, is

1. The combination, with the bell-hammer, its operating mechanism, and the casing A, of a verticallysliding rod having an arm or projection for engaging said bell-hammer, said rod projecting through and constructed to engage the upper part of the casing to hold itself elevated, substantially as set forth.

2. The combination, with the bell-hammer, its operating mechanism, and easing, of the vertically-sliding rod H, hook G, and pin thereon,for the purpose set forth, and the pivoted lever Q, for releasing said rod, substan tially as set forth.

5 8. The combination, with the bell-hammer, its operating mechanism, and easing, of the vertically-sliding rod H, bearings J J therefor, springK on the rod between said bearings, hook G, adapted to engage an arm of the bell-hammer, looking-pin O, and releasing-lever Q, substantially as set forth.

4. Inaburglar-alarm,theeombinationgvith lever Q, pivoted to the casing thereof, and adapted to release the alarm mechanism, of

I 5 the arm T on the sash, pivoted lever S, engaging the end of arm T with one end, an elbowlever, and cords or Wires connecting said el-. bow-lever with releasing-lever Q, and arm S, substantially as set forth.

5. In a combined ringing and detonating burglar-alarm, the oombinatiomwith the bellhammer,its operating meehanism,and the easing, of the vertically-sliding rod I-I, projecting through a slot in the top of the casing, and provided with a projection or arm for engaging the bell-hammer, said rod being eonstrueted to engage said top part of the casing when raised, and the block M on the bottom of the casing below the rod, substantially as i set forth.

JESSE C. SIMS. FRANK R. SHOR-KES.

Witnesses:

CHARLES H. LADUKE, JOHN B. COMEAU. 

